Trunk Bags

Carry more without changing the way your bike handles. Trunk bags from ERIK'S mount directly to your rear rack and give you practical, accessible storage without the weight penalty or feel of a loaded backpack. Whether you are commuting to work, heading out on a weekend touring ride, or stocking up for a day-long adventure, a trunk bag keeps your essentials organized, protected, and within reach the moment you stop.

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    Key Features to Look For

    Trunk bags come in a wider range of sizes, configurations, and materials than most riders expect. Knowing what to look for helps you choose one that actually fits your rack and your routine.

    • Capacity and Size  Smaller trunk bags in the three to five liter range work well for commuters carrying a wallet, keys, a lock, and a light snack. Larger bags in the ten to fifteen liter range give touring riders room for a change of clothes, tools, food, and electronics. Think about what you plan to carry on your longest typical ride and size up from there rather than trying to compress into something too small.

    • Mounting System  Most trunk bags use a combination of hook-and-loop straps or rigid mounting hardware to attach to a rear rack. Some bags clip directly onto rack rails with quick-release buckles that allow fast on and off without tools. Make sure the bag you choose is compatible with the rack you are running, as sizing and rail spacing varies between brands.

    • Waterproofing  Fully waterproof bags use welded seams and waterproof zippers to keep everything dry even in sustained rain. Water-resistant bags shed light moisture but will eventually soak through in heavy conditions. If you ride in mixed weather or commute year-round, proper waterproofing is worth prioritizing. Otherwise, a water-resistant bag with a rain cover can serve most riders adequately.

    • Organization  Interior dividers, zippered pockets, and key clips help keep smaller items from migrating to the bottom of the bag where they are hard to find. A separate external pocket for items you access frequently, like a phone, snack, or sunglasses, saves you from digging through the main compartment at every stop.

    • Reflectivity and Visibility  Many trunk bags include reflective panels or piping that improves your rear visibility in low light. This is a small but meaningful safety feature for commuters and anyone riding into or after dark without a dedicated rear light mount on the bag itself.

    • Expandability  Some trunk bags include roll-top or zipper expansion that lets you increase the carrying volume when you need it and compress the bag down when you do not. This makes them more versatile across different riding days without requiring you to swap bags entirely.

    Complete Your Bike Setup

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    Expert Bag Advice at ERIK'S

    The right trunk bag depends on your rack, your riding, and exactly what you are trying to carry. Our staff at ERIK'S can help you match bag size, mounting style, and waterproofing level to your specific setup. Stop into any ERIK'S location and we will help you find a bag that fits your bike and your riding life.

    Shop trunk bags at any ERIK'S location across Minnesota, Wisconsin, Michigan, Illinois, Kansas, South Dakota, Iowa, and Illinois.